Assignment 2.1
Relations and Functions
Graph each relation or equation and find the domain and range. Then determine whether the relation
or equation is a function. Is the relation discrete or continuous?
{(6, 3), (2, 1), (-2, 3)}
{(-5, 2), (2, 4), (1, 1), (-5, -2)}
y = 0.5x
y = 2x + 1
Find each value if f(x) = 5x – 9.
f(6)
f(-2)
f(y)
f(-2v)
TAXI RIDE
A taxi company charges $2.80 for the first mile and $1.60 for each additional mile. The amount a
passenger will be charged can be expressed as f(x) = 1.20 + 1.60x, when x ≥ 1. Graph this equation and
find the domain and range. Then determine whether the equation is a function. Is the equation discrete
or continuous?
Open-Ended